Self-locking nuts Normal type Self-Locking Nut M100x2 KMA Series - ISB KMA 20-ISB €43.40 (€35.87 tax excl.) Self-locking nut with nylon inner ring, mainly used to secure bearings on shafts. Made of Steel. Reference: KMA 20 GTN100 Representative image for illustrative purposes, the item supplied will correspond to the indicated specifications. Add to cart